EP1527798A3 - Diffusive tip assembly - Google Patents

Diffusive tip assembly Download PDF

Info

Publication number
EP1527798A3
EP1527798A3 EP05000735A EP05000735A EP1527798A3 EP 1527798 A3 EP1527798 A3 EP 1527798A3 EP 05000735 A EP05000735 A EP 05000735A EP 05000735 A EP05000735 A EP 05000735A EP 1527798 A3 EP1527798 A3 EP 1527798A3
Authority
EP
European Patent Office
Prior art keywords
radiation
tip
disclosed
fiber
length
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP05000735A
Other languages
German (de)
French (fr)
Other versions
EP1527798A2 (en
Inventor
Edward L. Sinofsky
Loncoln S. Baxter
Norman Farr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cardiofocus Inc
Original Assignee
Cardiofocus Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US08/468,568 external-priority patent/US5643253A/en
Priority claimed from US08/467,414 external-priority patent/US5632767A/en
Priority claimed from US08/471,744 external-priority patent/US5637877A/en
Application filed by Cardiofocus Inc filed Critical Cardiofocus Inc
Priority claimed from EP95933733A external-priority patent/EP0781154A2/en
Publication of EP1527798A2 publication Critical patent/EP1527798A2/en
Publication of EP1527798A3 publication Critical patent/EP1527798A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/08—Radiation
    • A61L2/10—Ultraviolet radiation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L29/00—Materials for catheters, medical tubing, cannulae, or endoscopes or for coating catheters
    • A61L29/08—Materials for coatings
    • A61L29/085—Macromolecular materials
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/06—Radiation therapy using light
    • A61N5/0601—Apparatus for use inside the body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
    • A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
    • A61B18/22—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor
    • A61B2018/2255—Optical elements at the distal end of probe tips
    • A61B2018/2261—Optical elements at the distal end of probe tips with scattering, diffusion or dispersion of light

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Biomedical Technology (AREA)
  • Engineering & Computer Science (AREA)
  • Epidemiology (AREA)
  • Pathology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Radiation-Therapy Devices (AREA)
  • Laser Surgery Devices (AREA)

Abstract

Optically transmissive fiber tip assemblies having radiation-scattering particles (24) incorporated therein are disclosed for use in phototherapy. In one embodiment, diffusers with reflective end caps are disclosed. As radiation propagates through the fiber tip, a portion of the radiation is scattered in a cylindrical (or partially cylindrical) pattern along the length of the fiber tip. Radiation which is not scattered during this initial pass through the tip can be reflected by at least one surface (28) of the assembly and returned through the tip. During this second pass, the remaining radiation (or at least a major portion of this returning radiation) again encounters the scatterers which provide further radial diffusion of the radiation. The scattering medium (22) and the reflective end cap can interact to provide a substantially uniform (or other predefined) axial distribution of laser radiation over the length of the tip apparatus. In another embodiment, diffusive loop assemblies are disclosed for diffusing radiation from an optical fiber. Disposed sheaths are also disclosed, as are integral stopper devices which limit the penetration of the apparatus. The devices of the invention are useful for various medical purposes as well as the sterilization of medical instruments.
EP05000735A 1994-09-09 1995-09-08 Diffusive tip assembly Withdrawn EP1527798A3 (en)

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
US467414 1983-02-17
US471744 1983-03-03
US30360594A 1994-09-09 1994-09-09
US303605 1994-09-09
US08/468,568 US5643253A (en) 1995-06-06 1995-06-06 Phototherapy apparatus with integral stopper device
US08/467,414 US5632767A (en) 1994-09-09 1995-06-06 Loop diffusers for diffusion of optical radiation
US468568 1995-06-06
US08/471,744 US5637877A (en) 1995-06-06 1995-06-06 Ultraviolet sterilization of instrument lumens
EP95933733A EP0781154A2 (en) 1994-09-09 1995-09-08 Phototherapeutic apparatus
EP04029580 2004-12-14

Related Parent Applications (3)

Application Number Title Priority Date Filing Date
EP95933733.8 Division 1996-03-14
EP04029580 Division 1994-09-09 2004-12-14
EP04029580.0 Division 2004-12-14

Publications (2)

Publication Number Publication Date
EP1527798A2 EP1527798A2 (en) 2005-05-04
EP1527798A3 true EP1527798A3 (en) 2007-04-04

Family

ID=46305033

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05000735A Withdrawn EP1527798A3 (en) 1994-09-09 1995-09-08 Diffusive tip assembly

Country Status (1)

Country Link
EP (1) EP1527798A3 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL174858A0 (en) 2006-04-06 2006-08-20 David Gertz Md Phd S Catheter for laparoscopic perivascular or latravascular delivery of low level laser lrradiation for retardation of progreession and/or rupture of abdominal aortic aneurysm
DE102006016957B4 (en) * 2006-04-11 2010-04-22 Vimecon Gmbh laser applicator
EP4236765A1 (en) * 2020-11-03 2023-09-06 Duffner, Martin Improved medical tube
CN115373077A (en) * 2022-08-04 2022-11-22 江西麦帝施科技有限公司 Optical fiber for diffusing laser

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5054867A (en) * 1990-01-09 1991-10-08 Ciba-Geigy Corporation Apparatus for irradiating the bronchi of a patient for the purpose of photodynamic therapy
WO1994017434A1 (en) * 1993-01-21 1994-08-04 Fiberguide Industries, Inc. Fiber optic cylindrical diffuser

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5054867A (en) * 1990-01-09 1991-10-08 Ciba-Geigy Corporation Apparatus for irradiating the bronchi of a patient for the purpose of photodynamic therapy
WO1994017434A1 (en) * 1993-01-21 1994-08-04 Fiberguide Industries, Inc. Fiber optic cylindrical diffuser

Also Published As

Publication number Publication date
EP1527798A2 (en) 2005-05-04

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